v2.4.1.9

Derivatives - Credit-related Contingent Features and Collateral (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Derivative [Line Items]
Additional collateral required to be posted upon downgrade, one incremental notch	$ 1,358
Additional collateral required to be posted upon downgrade, second incremental notch	2,714
Credit derivatives
Derivative [Line Items]
Derivative liability subject to unilateral termination upon downgrade, one incremental notch	1,364
Derivative liability subject to unilateral termination upon downgrade, second incremental notch	4,724
Collateral posted subject to unilateral termination upon downgrade, one incremental notch	1,106
Collateral posted subject to unilateral termination upon downgrade, second incremental notch	3,922
Bank of America, N.A. and subsidiaries
Derivative [Line Items]
Additional collateral required to be posted upon downgrade, one incremental notch	1,087
Additional collateral required to be posted upon downgrade, second incremental notch	$ 1,877

Additional Collateral, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value

No definition available.

Name:	bac_AdditionalCollateralEffectofDowngradebyOneIncrementalNotchAggregateFairValue
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Additional Collateral, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value

No definition available.

Name:	bac_AdditionalCollateralEffectofDowngradebySecondIncrementalNotchAggregateFairValue
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Collateral Posted, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstances

No definition available.

Name:	bac_CollateralPostedEffectofDowngradebyOneIncrementalNotchAggregateFairValueIncludingTriggeringCircumstances
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Collateral Posted, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance

No definition available.

Name:	bac_CollateralPostedEffectofDowngradebySecondIncrementalNotchAggregateFairValueIncludingTriggeringCircumstance
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Derivative, Net Liability Position, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance

No definition available.

Name:	bac_DerivativeNetLiabilityPositionEffectofDowngradebyOneIncrementalNotchAggregateFairValueIncludingTriggeringCircumstance
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Derivative, Net Liability Position, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance

No definition available.

Name:	bac_DerivativeNetLiabilityPositionEffectofDowngradebySecondIncrementalNotchAggregateFairValueIncludingTriggeringCircumstance
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	dei_LegalEntityAxis=us-gaap_SubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CreditRiskContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: